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J. J. BURK. Machine for Driving Nails.

No. 231,475. Patented Aug. 24,1880.

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J. J. BURK.

. Machine for Driving Nails. No. 231,475. Patented Aug. 24,1880.

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J" I INV1VTOR .l Ja/uz Jfuz-k, /amz4 war 6L UNITED STATES PATENT OFFICE.

JOHN J. BURK, or BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF or HIS RIGHT TO E. M. JEWETT, or SAME PLACE.

MACHINE FOR DRIVING NAILS.

SPECIFICATION forming part of Letters Patent No. 231,475, dated August 24, 1880.

Application filed Jun'e 2, 1880. (Model.)

To all whom it may concern:

Be it known that I, JOHN J. BURK, a subject of the Queen of Great Britain, residing in Buffalo, in the county ,of Erie and State of New York, have invented certain new and useful Improvements in Machines for Driving Nails, of which the following is a specification.

The object of my invention is to provide a machine for automatically feeding and driving Io nails into hoops, cheese or other boxes, and

clinching them when required.

The first part of my invention relates to the devices forholding and feeding the nails; and it consists of a hollow drum or barrel set in I 5 suitable bearings, so as to turn easily, and havin g openings through which the nails drop into atronghhavingalong narrow openingthrough the bottom, in combination with a vibrating plate having openings for receiving, separat- 2o ing, and dropping the nails, one at a time, into a spout which delivers them to the nail-driver.

The object of the second part of the invention is to produce a simple nail-clinching device; and it consists in the combination, with the nail-drivin g bar, of an oscillating block (held in position by a spring) through which the nail passes while being driven through the article to be nailed against the clinching-bar, the arrangement being such that the point of the nail is directed upward or in the direction it is intended the nail should clinch while being driven, as will be more clearly hereinafter shown.

The third part of my invention also relates 3 5 to the nail-driving apparatus; and it consists in the combination, with the nailing-bar, or

an ad'ustin -nut rovided with a vulcanized J a p rubber back for the purpose of regulating the.

pressure of the driver against the nail, all of which will be more clearly understood by reference to the drawings, in which- Figure 1 is a vertical longitudinal section conveyors, showing the arrangement of the nails as they move down the incline through the narrow openings in said conveyers. Fig.

6 represents a section through the nail drum or receptacle on line Y, Fig. 3. Fig. 7 is a detached view, showing a vertical longitudinal section through the nail-driver. Fig. 8 is a front View of the nail-driver. Fig. 9 represents a portion of the rear part of the nailing device, showing the adjusting-nut and its rubber washer or back; and Fig. 10 is a front view of a portion of the conveyors, the crossbar or support below them, a part of the separating-bar, and also an end view of one of its supporting-arms.

In said drawings, A represents the frame of the machine, supported on legs A and stren gthened by braces or cross-bars A A B is the nail-drum. It is provided with the long narrow openings B for the-nails to drop through when the machine is in operation, and a door, B made and hinged thereto in the ordinary way, (see Fig. 6,) through which the nails are passed when filling it. This drum or barrel B is supported in bearings B in the vertical supports or posts C, so as to turn 7 easily. (See Fig. 3.) It receives a partial rotary movement back and forth by means of the cord or chain 0, weight and foot-lever 0 said cable or cord being connected to the weight 0 as shown in Fig. l, and passed once or twice around the nail-drum B, and from thence down under the nail-feeding apparatus at D, then over the curved nail-driving bar P and down to the foot-lever C to which it is connected at D 8 It will be seen by reference to Fig. 1 that a movement of the foot-lever G downward by the foot will draw the cord 0 downward and forward, thereby causing the drum or nailholder B to turn in the direction of the arrow 9:) and the weight O to move upward, and that when the pressure of the foot is taken off from said lever the weight (J will descend and cause the nail-holder to turn back or in the opposite direction.

The nail-troughs E are placed under the drum B, so as to catch the nails as they drop therefrom. E (see Fig. 3) is a thin or narrow opening at the bottom of the troughs, which extends along their whole length, and to the I00 end of the conveyers E both are inclined, so that as the nails drop in they pass through said opening except the heads, which are too large to pass through, and they consequently fall into the position shown in Fig. 5. The troughs and conveyers are inclined sufficientl y to allow the nails, as they drop into the openings E, to slide down easily until they are stopped by the nail-separatin g bar E, which is held in place by two arms, F, pivoted to it at F and to the under parts of the troughs at about F, so that the bar can swing back and forth in the direction of the arms G G. It is represented in Fig.3 as broken in three parts, the part at Gr showing it in position for separating one nail from another, the part Gr showing the opening g in said bar at its farthest point in the direction of the arrow G, and the part G showing the position of said opening 9 (or openings y) when the bar has reached the limit of its movement in the direction of the arrow G.

The openings in the conveyer or slideways E terminate in a larger opening, H, (see Figs. 3 and 4,) through which the nails drop as they are brought into position by the separatingbar E as above mentioned, into the spouts H. (See Figs. 1 and 7.)

The bar E receives its vibrating movements one way by a spring, K, (see Fig. 3,) and the other way by means of the foot-lever G weight J, and a cord, H fastened to said lever by a joint, I, (see Fig. 1,) which cord is then passed downward and is fastened to the weight J, and to said weight is fastened another cord or its equivalent, 1, which cord passes up over a pulley, J, on the cross-bar J under the conveyers or slideways, a front view of which is shown in Fig. 10, and after passing horizontally a short distance, as shown, the said cord or chain is firmly fastened to a pin or bolt, J It will be seen that a movement of the foot-lever 0 downward will cause the cord H which passes easily through the loop or eye 1 to draw the weight J upward, which operation allows the spring K to act and move the arms F and plate or bar E in the direction of the arrow G, (see Fig. 3,) and that a reverse movement of the foot-lever G will allow the weightJ to act and move the said bar F. in the opposite direction.

To the shaft K is securely fastened two outside cranks, K one on each side of the machine, to which the connecting-rods L are jointed in the ordinary way, the opposite ends of said rods being jointed to the nail-driving-bar carriage L, which carriage is supported by and slides forward and back on the rods L To the shaft K is rigidly fastened a crank, M, having a connecting-rod, 2', jointed thereto, as shown in Figs. 1 and 2, and having its opposite end jointed to the foot-lever C by a bolt or pin, D or in any other well-known way.

It will now be seen that a movement of the foot-step G downward will draw the crank M also downwardly by means of the connecting- :rod 'i, which operation will turn the shaft K in the same direction, and also the cranks K and thereby draw the connecting-rods L and the nail-driving-bar carriage forward.

The backward or reverse movement of said carriage is produced by the weight 0 which is heavy enough to draw the foot-lever 0 up again by means of the cord or cable 0, as hereinbefore mentioned.

The nail-driving bar N is supported at its back end by the angular bar a, (which is rigidly fastened to the carriage L,) through the upright portion of which bar a it passes and is fastened by a rivet-head or washer, a. It is also provided with a nut, N, and a vulcanized rubber washer, N The objectof the nut N is to adjust the distance the bar N shall be moved forward, and the rubber washer allows it to adjust itself to any articles to be nailed which may vary alittle in thickness.

The forward end of the nailing-bar N passes into and through the nail receiving box 0, which box is provided with an opening, 0, to receive the nails from the spouts H. (See Fig. 7 The boxes 0 are rigidly fastened to acrossbar or carriage, P, which carriage is supported and alsoslides back and forth on the bars or rods L and is fastened by chains P to the carriage L. (See Figs. 1 and 2.) Its backward and forward movements are produced by the foot-lever W, which is connected by a red, I), to the lower or horizontal end of an angular arm, 0, the said arm being titted on the shaft K, so as to turn easily thereon.

To the upper or vertical part of the arm 0 is jointed a connecting-rod, f, having its opposite end securely fastened to the carriage P. (See Figs. 1 and 2.) Its objectis to bring the nail-boxes forward, so as to hold the articles to be nailed firmly between them and the clinching-bar.

It is obvious that a downward movement of the foot-lever W will move the carriage P forward, and that a reverse movement willmove it backward.

In the frontend of the nail-boxO isa cavity, into which is fitted a small block, Q. (See Figs. 7 and 8.) It has an opening, 1t, through it of the same size as the bore r of the box 0, through which the nail --driving bar passes, and is held to the box 0 by a rubber band or other equivalent spring, R. The block Q, being of a slightly-sharper angle than the recess in which it is fitted, as shown in Fig. 7, and being held closely in place by the rubber spring It, is capable of .a vibratory movement, the upper inner corner or edge acting as a fulcrum, on which it rocks. In its downward position the opening B is exactly in line with the bore 1". In its upward position the openingR inclines upward a little, as shown in Fig. 7.

T represents the clinchin g-bar, against which the points of the nails turn while being driven. It is rigidly fastened to the frame of the machine by short posts V, (see Fig. 1,) which bring it to the proper height. The forward ends of the rods or bars L pass through and are held by the posts V, as will be understood by reference to Figs. 1 and 2. The back ends, which pass through the supports 0, as shown in Fig. 1, are secured by a nut, V.

It will be noticed that the carriages L and P and clinching-bar T are in the form of a curve, and that the nailing apparatus is arranged to correspond, so that hoops or cheeseboXes may be nailed thereby; but they may be made straight, and the nailing devices may be arranged at right angles thereto, so that ordinary straight-sided boxes may be nailed. In that case what is used as a clinching-bar for articles requiring it may be made movable and adjustable, so as to be used as a gage, against which the box to be nailed is set and held in place, as in such boxes it is not necessary to clinch the nails.

The object of the chains P is to prevent the carriage P from being drawn far enough from L to draw the nail-driving bar out of place. They can be. easily removed at any time when required.

The operation of my invention is as follows: The nail-holder being supplied with nails of the required size, a movement of the foot-lever upward and down will cause some of the nails to drop into the troughs and slide down the conveyers against the nail-separating bar E in the manner hereinbeforc mentioned. A movement of the foot-lever O upward will now cause the separating-bar E to separate a nail and allow one to drop in each spout, from which it slides into a nail-box, O, as specified. The hoop or other article to be nailed is now placed between the clinching-bar and the nailboxes 0, and the foot-lever W is forced down, which brin gs the n ail-boxes forward and clamps the hoop firmly between them and the clinching-bar T. The foot-lever O is now forced down, thereby moving the carriage L and nail-driving bar N forward, and driving and clinching the nail. The nail, in being driven,

when it strikes the clinching-bar, bends upward, substantially as shown by the dotted lines Z in Fig. 7. The inclined opening of the block Q, through which the nail passes, causes it to bend in the direction of the incline.

Of course it will be seen that theopening of the block Q comes into line with the bore 4" when the bar N passes through it in driving a nail, and that the spring R causes it to move again into the position shown in Fig. 7 as soon as the bar N draws back out of it.

I claim as my invention 1. The rotary nail-holder B, one or more inclined troughs and conveyers, E E provided with the openings E, in combination with a nail-separatin g bar, E having openings g, and arranged to move at right angles to openings E, substantially as specified, for the purpose of separating the nails one at a time and dropping them into a suitable receptacle, as described.

2. In a nail-driving-machine, the combination of the nail-driver N, nail-box O, and perforated vibrating block Q, for the purpose of driving the nail and controlling the direction in which it shall bend in clinching, as specified.

3. In a naildriving machine, the combination of the carriage P, nail-boxes O, clinchingbar T, angular arm a, foot-lever W, and the connecting rods or bars I) f, for the purpose of clamping the article to be nailed.

4. The combination of the foot-lever 0 connecting-rod i, crank M, rigidly fastened to the shaft K, cranks K also fastened to said shaft, connecting-rods L, and carriage L, provided with holding-bars a, for the purpose of giving the nail-driving bar N its proper movements, as herein set forth.

5. The combination of the foot-lever U cord or cable 0, drum or nail-holder B, and weight 0 for the purpose of operating the nail-holder of a nail-driving machine, substantially as described.

6. The foot-lever O cord H passed through the loop or eye I and connected with the weight J, as specified, in combination with the cord or cable 1, pin or pulley J, and the nailseparating bar E, as and for the purposes described.

JOHN J. BURK.

Witnesses:

JAMES SANc's'rER, HUGH SANGSTER. 

